سنن النسائي

It was narrated that Abu Wahb, who was a Companion of the Prophet, said: "The Messenger of Allah (ﷺ) said: 'Call (your children) by the names of the prophets. And the most beloved names to Allah, the Mighty and Sublime, are 'Abdullah and 'Abdur-Rahman. Keep horses; wipe their forelocks and posteriors, and prepare them for Jihad, but do not prepare them to seek vengeance for people killed during the Jahiliyyah. You should seek out Kumait, horses with a white mark on the face and white feet, or red with a white mark on the face and white feet, or black with a white mark on the face and white feet.'"